Deformation Substructure and Mechanical Properties of BCC-Polycrystals

  1. Prof. Dr. Michael Zehetbauer2 and
  2. Prof. Ruslan Z. Valiev3
  1. S.A. Firstov

Published Online: 28 JAN 2005

DOI: 10.1002/3527602461.ch2c

Nanomaterials by Severe Plastic Deformation

Nanomaterials by Severe Plastic Deformation

How to Cite

Firstov, S.A. (2005) Deformation Substructure and Mechanical Properties of BCC-Polycrystals, in Nanomaterials by Severe Plastic Deformation (eds M. Zehetbauer and R. Z. Valiev), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527602461.ch2c

Editor Information

  1. 2

    Institut für Materialphysik, Universität Wien, Boltzmanngasse 5, 1090 Wien, Austria

  2. 3

    Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, 12 K. Marks Str., Ufa, 450 000, Russia

Author Information

  1. Francevych Institute for Problems of Materials Science, Kyiv, Ukraine

Publication History

  1. Published Online: 28 JAN 2005
  2. Published Print: 25 FEB 2004

ISBN Information

Print ISBN: 9783527306596

Online ISBN: 9783527602469

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Keywords:

  • deformation substructure;
  • mechanical properties;
  • BCC transition metals;
  • polycrystals;
  • strain hardening;
  • high plastic deformations;
  • brittle-to-ductile transition

Summary

BCC transition metals are very good objects to study regularities of strain hardening at high plastic deformations. The data on evolution of dislocation substructures enable an essential change of the strain hardening mechanism at high plastic deformations to be predicted as well as a non-monotonous influence of plastic deformation on temperature of brittle-to-ductile transition to be explained [1–3, etc.]. Recently, unquestionable evidences for deformation substructure effects on changes of fracture micro-mechanisms have been obtained [4–6] which also explain the non-monotonous dependence of fracture toughness on strain degree.